Global Patent Index - EP 0981035 A2

EP 0981035 A2 2000-02-23 - Heat exchanger for exhaust gases

Title (en)

Heat exchanger for exhaust gases

Title (de)

Abgaswärmetauscher

Title (fr)

Echangeur de chaleur pour gaz d'échappement

Publication

EP 0981035 A2 (DE)

Application

EP 99115443 A

Priority

DE 19836889 A

Abstract (en)

The heat exchanger plates (6) have extending areas (7) forming the distribution and collection spaces for cooling water. The flow channels (14) for exhaust gas extend in a straight path through the heat exchanger, issuing at opposing ends in the pipe bases (13). At least one of the two types of flow channels (9,14) has a surface structure, whereby the full-surface contact between the flow channels is excluded. The flow channels for cooling water have a somewhat corrugated surface structure.

Abstract (de)

Die Erfindung betrifft einen Abgaswärmetauscher (1) mit Paaren schalenförmiger Wärmetauscherplatten (6), jedes Paar schalenförmiger Wärmetauscherplatten (6) bildet einen Strömungskanal (9) für das eine Mittel, indem sie am umlaufenden Randflansch spiegelbildlich so zusammengefügt und verbunden sind, daß der Randflansch der einen Wärmetauscherplatte (6) nach einer Seite und der Randflansch der anderen Wärmetauscherplatte (6) zur entgegengesetzten Seite gerichtet ist, sowie mit Öffnungen in den Wärmetauscherplatten, die auf einer gemeinsamen Linie liegen, um den Sammel-und den Verteilerkanal für das eine Mittel zu bilden und mit zwischen den erwähnten Strömungskanälen angeordneten weiteren Strömungskanälen für das andere Mittel. Bei diesem Abgaswärmetauscher sollen die Fertigungskosten weiter gesenkt werden und außerdem soll eine höhere Sicherheit gegen Vermischen des Abgases mit dem Kühlwasser erreicht werden, bei gleichzeitig geringem Druckverlust auf der Abgasseite. Erfindungsgemäß wird das dadurch erreicht, daß der flüssigkeitsgekühlte Abgaswärmetauscher (1) in gehäuseloser Bauweise ausgeführt ist, daß die Wärmetauscherplatten (6) auskragende Bereiche (7) aufweisen und in diesen Bereichen (7) den Verteiler - und den Sammelraum für das Kühlwasser ausbilden, daß sich die Strömungskanäle (14) für das Abgas etwa auf geradem Weg durch den Wärmetauscher erstrecken und an gegenüberliegenden Enden in Rohrböden (13) münden und daß mindestens eine der zwei Arten von Strömungskanälen (9; 14) eine solche Oberflächenstruktur (22) aufweist, daß die vollflächige Berührung zwischen den Strömungskanälen (9 und 14) ausgeschlossen ist. <IMAGE>

IPC 1-7 (main, further and additional classification)

F28D 9/00; F28D 1/03

IPC 8 full level (invention and additional information)

F28D 7/00 (2006.01); F28D 9/00 (2006.01)

CPC (invention and additional information)

F28D 9/0043 (2013.01); F28D 7/0025 (2013.01); F28D 9/0037 (2013.01); F28D 21/0003 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19836889 A1 20000217; AT 242860 T 20030615; EP 0981035 A2 20000223; EP 0981035 A3 20000607; EP 0981035 B1 20030611; ES 2201604 T3 20040316

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